Multilayer composite material for floors of high-speed trains and bullet trains

A technology of multi-layer composite materials and high-speed trains, applied in railway car body, railway car body parts, layered products, etc., can solve the problems affecting the impact resistance and bearing capacity of materials, complex multi-layer structure, difficult production and application, etc. , to achieve the effect of reducing density, good noise reduction, and reducing density

Inactive Publication Date: 2016-09-28
TAICANG PAIOU TECH CONSULTING SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the multi-layer structure is relatively complex and not easy to produce and apply. In addition, only the steel plate layer in the structure can bear load, which greatly affects the impact resistance and load-bearing capacity of the material, and limits

Method used

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  • Multilayer composite material for floors of high-speed trains and bullet trains

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Effect test

Embodiment 1

[0015] refer to figure 1 , is a structural schematic diagram of a multi-layer composite material for high-speed trains, 10 is a new sound insulation composite material, 20 is a phenolic composite material, 30 is a reinforcing fiber, and 40 is a thermosetting resin, which is characterized in that the multi-layer composite material The layer is a phenolic composite material with a thickness of 10 mm. The phenolic composite material is a new type of composite material processed by a special process of thermosetting resin and reinforcing fiber. The thermosetting resin is phenolic resin, and the reinforcing fiber is ultrafine glass with a diameter of 1 micron. The compression strength of fiber and phenolic composite materials is 10MPa, the sound insulation is 45dB, and the thermal conductivity is 0.04W / m·k. It can be simply composited or 3-D formed to make products of different shapes. It is easy to install and save space. The design is more reasonable, which can improve the comfor...

Embodiment 2

[0019] refer to figure 1 , is a structural schematic diagram of a multi-layer composite material for high-speed trains, 10 is a new sound insulation composite material, 20 is a phenolic composite material, 30 is a reinforcing fiber, and 40 is a thermosetting resin, which is characterized in that the multi-layer composite material The layer is a phenolic composite material with a thickness of 12 mm. The phenolic composite material is a new type of composite material made of thermosetting resin and reinforcing fiber through special processing. The thermosetting resin is phenolic resin, melamine resin, special epoxy resin, and reinforcing fiber. It is an ultra-fine glass fiber with a diameter of 1 micron. The compressive strength of the phenolic composite material is 20MPa, the sound insulation is 50dB, and the thermal conductivity is 0.02W / m·k. It can be simply compounded or 3-D formed to make products of different shapes. , easy to install and save space, make the design more r...

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Abstract

The invention discloses a multilayer composite material for floors of high-speed trains and bullet trains. The multilayer composite material is characterized in that the inner layer of the multilayer composite material is a phenolic aldehyde composite material having the thickness being 10-12mm, the phenolic aldehyde composite material is formed by processing thermosetting resin and reinforcing fiber through the special technology, the compression strength of the phenolic aldehyde composite material is 10-20MPa, the sound reduction index is 30-50dB, the thermal conductivity coefficient is 0.02-0.04 W/m.k, and the phenolic aldehyde composite material can be simply composited as well as 3-D formed; the outer layer is a novel sound insulation composite material having the thickness being 2-3mm, and is formed by alternatively arraying foaming layers and unfoamed layers through the micro-layer extrusion technology, the single-layer thickness of the sound insulation composite material is 1-1.5mu, the number of layers is 2000-3000, and effective reflection of sound waves by the layered interface is realized. Compared with the rubber floor applied to the high-speed trains and bullet trains at present, the multilayer composite material has the advantages of low density (being less than or equal to 1300kg/m<3>) or less, good sound insulation performance (being greater than or equal to 29dB), long service life, flame retardance, environmental protection and the like, and can be applied to rail transit vehicles, such as high-speed bullet trains, subways, trams, light railways and rail flaw detection vehicles.

Description

technical field [0001] The patent of the present invention relates to a multi-layer composite material, in particular to a multi-layer composite material for the floor of high-speed trains. technical background [0002] With the guidance of China's "going out" strategy, China has entered the era of high-speed rail. While high-speed trains bring convenience, safety and comfort to people, they also bring environmental pollution, noise and vibration to people. With the gradual improvement of the interior noise limit standard, the noise problem is becoming more and more important. The interior noise is not only a mandatory inspection requirement for passenger cars leaving the factory, but also one of the mandatory requirements for export vehicles to meet foreign certification. It can be said that controlling interior noise is not only for the The protection of passengers is an important embodiment of the level of passenger car manufacturing. How to control the noise in the car a...

Claims

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Application Information

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IPC IPC(8): B61D17/10B32B27/06B32B27/20B32B27/38B32B27/42B32B17/04
CPCB61D17/10B32B27/06B32B27/065B32B27/20B32B27/38B32B27/42B32B2260/021B32B2260/046B32B2262/101B32B2270/00B32B2307/102B32B2307/302B32B2307/3065B32B2307/752B32B2605/10
Inventor 陈照峰叶信立
Owner TAICANG PAIOU TECH CONSULTING SERVICE
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